JP2006050156A - Network terminating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adapt a network terminating apparatus to the form of the operation of a telephone and a terminal, and to effectively utilize a sender-number notifying function, regarding the network terminating apparatus. <P>SOLUTION: The network terminating apparatus takes an interface with either one of a storage exchange network or a message exchange network and a circuit switching network and a link supplied to the discrete housings of a plurality of terminals and being not adapted to the signaling system of the circuit switching network at every call generated at a plurality of the terminals capable of being accessed to the storage exchange network or the message exchange network and the circuit switching network. The network terminating apparatus is constituted so as to have a storage means, to which all terminals permitting applications to receiving responses are registered previously at every sender number of receiving calls generated at a plurality of the terminals, and a sender-number gain means for gaining the sender number notified from the circuit switching network on the basis of the signaling system. The network terminating apparatus is constituted so as to further have a control means for notifying the sender number limiting an object to be rung and gained at all terminals registered to the storage means in response to the gained sender number. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a network termination device that terminates a storage switching network or a message switching network and a circuit switching network and interfaces these networks with a plurality of terminals.

  In recent years, many telephones having a caller ID notification function are connected to a subscriber line accommodated in an analog public telephone network, and are used to identify a caller of an incoming call generated in such a telephone. Such a telephone set (including a slave unit connected to the master unit via a wireless transmission path) is connected to a subscriber line via an ADSL (Asymmetric Digital Subscriber Line) modem, for example. As a result, it is also being used for the use of IP phones with low call charges.

In addition, as a prior art relevant to this invention, there exist the following technique published in the patent documents 1, 2 and the nonpatent literature 1 mentioned later.
Patent Document 1: “A telephone adapter device that appropriately switches a line between a plurality of communication networks when performing communication between two telephones using a single line selected from a plurality of communication networks, By converting the information corresponding to the communication network and the information corresponding to the public network number display function that are transmitted through a communication network other than the above, the communication network other than the public network described above is compatible with the number display function. A telephone adapter device that is characterized by the fact that it has a communication control unit that allows
Patent Document 2: “An internet telephone system that enables a plurality of telephones to be connected to each other and enables an internet telephone to be connected to the telephone. And a storage unit for registering the telephone number of the other party for each telephone, and based on the telephone number detected by the telephone number detection unit, select the telephone registered as the other party in the storage unit and ring the bell Internet telephone system characterized by point "
・ Non-patent document 1… “Used in combination with a VoIP router, it is characterized in that a direct number can be assigned to a slave unit at the same time as a representative number that calls all terminals of the master unit and the slave unit all at once. IP phone for homes that can be assigned 050 to each machine "
JP 2003-258986 A JP 2002-185639 A http://bb.watch.impress.co.jp/cda/event/2863.html

However, in the conventional example, the function of notifying the caller number is a function that performs the behavior suitable for the above-described signaling method for realizing the caller ID notification even when an incoming call occurs on the subscriber line. Since it is not provided, the slave unit (hereinafter referred to as “terminal”) connected via such an ADSL modem is often not provided.
Conventionally, even if the caller ID notification function can be used, when an incoming call occurs via a subscriber line, one or all of the above-mentioned telephones and terminals are ringing. It was the subject.

Therefore, utilization of the caller ID notification function has not necessarily been realized in a desirable form.
SUMMARY OF THE INVENTION An object of the present invention is to provide a network termination device that is compatible with the operation mode of a telephone or a terminal and that effectively utilizes the caller ID notification function.

  According to the first aspect of the present invention, for each call generated in a plurality of terminals that can access the storage switching network or message switching network and the circuit switching network, the storage switching network or message switching network and the circuit switching network In a network termination device that interfaces with either one of the terminals individually accommodated by a plurality of terminals and does not conform to the signal system of the circuit switching network, the storage means has an incoming call that occurs in the plurality of terminals. For each caller ID, all terminals that are allowed to be applied to incoming responses among a plurality of terminals are registered in advance. The caller number acquisition means acquires the caller number notified from the circuit switching network based on the signal system. The control unit restricts the target of ringing and notifies the acquired caller number to all the terminals registered in the storage unit corresponding to the acquired caller number.

That is, for a call received via a circuit switching network, only a desired terminal that can be applied to an incoming call response is ringed according to the caller, and the caller number of the caller is set to the user via these terminals. Will be notified. Further, any terminal is excluded from the ringing target corresponding to the incoming call whose caller is indicated by the desired caller number in accordance with the contents registered in the storage means.
Accordingly, in conjunction with the arrangement of the terminals, the telephone is operated in a form that is flexibly adapted to the configuration of the group, organization, and department to which each terminal belongs, and the function of notifying the caller number is effectively utilized. Further, it is possible to avoid useless response or transfer according to an incoming call, to properly maintain an environment related to work or business execution, and to improve convenience of caller ID notification.

According to the second aspect of the present invention, access to the storage switching network or the message switching network is performed via a link different from the subscriber line accommodated in the circuit switching network.
That is, in the network termination device that terminates a network different from the circuit switching network together with the circuit switching network, as in the first aspect of the invention, “for calls received via such a circuit switching network” “Terminals to be used for answering and to be notified of caller ID” are limited to the desired terminals, and any terminal is subject to ringing in response to an incoming call indicated by the desired caller ID. Excluded.

Accordingly, in conjunction with the provision of services related to data transmission and IP telephone, it is possible to effectively utilize the telephone operation and caller ID notification function in a desired form.
According to the third aspect of the present invention, for each call that occurs in a plurality of terminals that can access the IP network and the circuit switching network, one of the IP network and the circuit switching network, and the plurality of terminals individually In a network terminating device that interfaces with a link that does not conform to the signal system of the circuit switching network, the storage means includes a plurality of terminals for each caller number of an incoming call that occurs in a plurality of terminals. Of these, all terminals that are allowed to be applied to incoming responses are registered in advance. The caller number acquisition means acquires the caller number notified from the circuit switching network based on the signal system. The control unit restricts the target of ringing and notifies the acquired caller number to all the terminals registered in the storage unit corresponding to the acquired caller number.

That is, for a call received via a circuit switching network, only a desired terminal that can be applied to an incoming call response is ringed according to the caller, and the caller number of the caller is set to the user via these terminals. Will be notified. Further, any terminal is excluded from the ringing target corresponding to the incoming call whose caller is indicated by the desired caller number in accordance with the contents registered in the storage means.
Accordingly, in conjunction with the arrangement of the terminals, the telephone is operated in a form that is flexibly adapted to the configuration of the group, organization, and department to which each terminal belongs, and the function of notifying the caller number is effectively utilized. Further, it is possible to avoid useless response or transfer according to an incoming call, to properly maintain an environment related to work or business execution, and to improve convenience of caller ID notification.

In the invention described in claim 4, access to the IP network is performed through a digital subscriber line formed by sharing a subscriber line accommodated in the circuit switching network.
That is, in the network terminating device that terminates the IP network together with the circuit switched network, as in the third aspect of the invention, “it is used for a response to a call received through such a circuit switched network, and “Terminals to be notified of caller numbers” are limited to desired terminals, and any terminal is excluded from ringing targets corresponding to incoming calls whose callers are indicated by the desired caller numbers.

Accordingly, in conjunction with the provision of services related to data transmission and IP telephone, it is possible to effectively utilize the telephone operation and caller ID notification function in a desired form.
In the invention according to claim 5, the storage means stores the incoming call response as binary information individually indicating permission / inhibition of the incoming call response of the plurality of terminals for each caller number of the incoming call that occurs in the plurality of terminals. All terminals that are allowed to be applied to are registered in advance.

That is, the size of the storage area of the storage means is the maximum length of the identifier of the identifier of “terminal registered for each caller number of the above-mentioned incoming call and allowed or not applicable to the above-mentioned incoming call response”. The smaller the total number of terminals, the smaller the product with the number.
Therefore, by referring to such a storage unit, the processing amount of the process performed by the control unit is also reduced, and the responsiveness is improved along with the reduction of power consumption.

  As described above, in the inventions according to claims 1 and 3, the telephone is operated in a form that is flexibly adapted to the configuration of the group, organization, and department to which each terminal belongs in accordance with the arrangement of the terminals, and The caller ID notification function is used effectively. Further, it is possible to avoid useless response or transfer according to an incoming call, to properly maintain an environment related to work or business execution, and to improve convenience of caller ID notification.

According to the second and fourth aspects of the invention, in conjunction with the provision of services related to data transmission and IP telephone, it is possible to operate the telephone in a desired form and effectively utilize the caller ID notification function.
According to the fifth aspect of the present invention, the amount of processing performed by referring to the storage means is reduced, and the responsiveness is improved along with the reduction of power consumption.
Therefore, in the communication system to which these inventions are applied, the caller ID notification function is effectively utilized and the service quality and added value are increased without significantly increasing the cost.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing an embodiment of the present invention.
In the figure, an ADSL modem 10 is connected to a subscriber line switching center 32 via a “subscriber line 31 also serving as ADSL”, and the subscriber switching center 32 is connected to a public telephone network 33 and the Internet (IP network) 34. Is done. The ADSL modem 10 is connected to an analog telephone 40 that conforms to the signal system of the subscriber line 31.

Such an ADSL modem 10 includes the following elements.
A splitter 11 connected to the subscriber line 31
A first contact provided in the splitter 11 and connected to a two-wire input / output terminal (hereinafter referred to as “low-frequency input / output terminal”) corresponding to the low band of the transmission band of the subscriber line 31. In addition, switches 12-t, 12-r each having a second contact point connected to the telephone 40 described above.
・ Detector 13 connected to this low-frequency input / output terminal
A DTMF (Dual Tone Multifrequency) signal generator 14 having a balanced output terminal
A resistor 15 having one terminal connected to one of the balanced output terminals of the DTMF signal generator 14 and the other terminal connected to one of the low-frequency input / output terminals described above.
A switch 16 having a make contact connected to the other of the balanced output terminals of the DTMF signal generator 14 and a common contact connected to the other of the low-frequency input / output terminals described above.
A subscriber line interface unit (SLIC) 17 having input / output terminals individually connected to the third contacts of the switches 12-t and 12-r
A signal processing unit 18 provided in the splitter 11 and connected to an input / output terminal corresponding to a high transmission band of the subscriber line 31
A wireless zone is formed around the ADSL modem 10 and a wireless transmission path is formed between the terminals 50-1 to 50-n located in the wireless zone (here, it is assumed that the wireless LAN conforms to the standard IEEE802.11b). ) To perform the radio unit 19
A LAN interface unit 20 that forms a CSMA / CD communication link with a communication port of a personal computer (PC) 60
In addition to the input port connected to the output of the detector 13 and the output port connected to the input terminal of the DTMF signal generator 14, the subscriber line interface unit 17, the signal processing unit 18, the radio unit 19 and the LAN A processor (CPU) 21 having input / output ports respectively connected to input / output terminals of the interface unit 20
FIG. 2 is a diagram for explaining the operation of the present embodiment.

FIG. 3 is an operation flowchart of the present embodiment.
The operation of this embodiment will be described below with reference to FIGS.
Regarding matters common to the terminals 50-1 to 50-n, in the following, by adding a suffix “c”, which means that it can correspond to any of the suffixes “1” to “n”, to the code Describe.

The basic operation of each part is as follows.
The wireless unit 19 operates under the control of the processor 21, thereby forming a wireless transmission path with the terminal 50-c as a wireless LAN based on the CSMA / CA system compliant with the standard IEEE802.11b.
The signal processing unit 18 operates under the control of the processor, and is handed over to the subscriber line switching center 32 via the subscriber line 31 and the splitter 11 via the high band of the transmission band of the subscriber line 31. Modulate and demodulate signals.

  The first contacts of the switches 12-t and 12-r are connected to the second contact or the third contact described above under the leadership of the processor 21, and the subscriber line interface unit 17 is connected to such a switch. When connected to the subscriber line 31 via 12-t and 12-r, a register signal and a call signal are transferred between the subscriber line 31 and the processor 21 together with the telephone 40. Do.

  Note that the first contact point of the switches 12-t and 12-r is in a period in which power is not supplied to the ADSL modem 10 and a period in which the ADSL modem 10 is not started even when the ADSL modem 10 is started. The telephone 40 is connected to the subscriber line 31 via these switches 12 -t and 12 -r and the splitter 11 in order to be connected to the corresponding second contact. Accordingly, during such a period, the telephone 40 can access the subscriber line switching center 32 via the low band of the subscriber line 31, so that it can be used for any of outgoing calls, responses to incoming calls, and calls. Is done.

The detector 13 detects a line signal (including not only polarity inversion but also a ringing signal indicating an incoming call) received from the subscriber line switching center 32 via the subscriber line 31 and the splitter 11, and detects these signals. An event corresponding to the line signal is notified to the processor 21.
The switch 16 is opened or closed under the initiative of the processor 21, thereby forming a DC loop that terminates the subscriber line 31 via the splitter 11 together with the DTMF signal generator 14 and the resistor 15. Appropriately formed.

The DTMF signal generator 14 generates a DTMF signal that is a register signal based on an instruction given by the processor 21 during a period in which such a DC loop is formed. This DTMF signal is sent to the subscriber line switching center 32 via the resistor 15 and the switch 16, the splitter 11 and the subscriber line 31.
In addition, the overall operation performed when the respective units work together under the initiative of the processor 21 is as follows.
(Access to the Internet 34 by the personal computer 60)
The processor 21 performs transmission and reception of packets based on communication procedures TCP, IP, and the like adapted to the Internet 34 with the personal computer 60 via the LAN interface unit 20.
The sequence of these packets is exchanged with the subscriber line switching center 32 via the high band of the transmission band of the subscriber line 31 conforming to ADSL under the modulation / demodulation performed by the signal processing unit 18 as described above. Furthermore, it is handed over to the Internet 34 under the relay performed by the subscriber line switching center 32.
(Transmission of telephone 40 to subscriber accommodated in public telephone 33)
The processor 21 passes through the switch 16, the DTMF signal generator 14, the detector 13, and the splitter 11 in place of the telephone 40 according to the outgoing call request and the dial number given from the telephone 40 via the subscriber line interface unit 17. Then, the subscriber line 31 is accessed.
If it is determined that the corresponding outgoing call is a completed call or an incomplete call, the processor 21 connects the telephone 40 to the subscriber line via the switches 12-t and 12-r and the splitter 11. And switch 16 is set to open.
Further, when the processor 21 detects the end (disappearance) of the completed call or the on-hook of the telephone 40 by cooperating with the detector 13, the processor 21 corresponds to the first contact of the switches 12-t and 12-r. The telephone 40 (or the subscriber line interface unit 17) is connected to the subscriber line 31 by connecting to the second (or third) contact.
(Transmission via terminal 50-c)
When the calling signal is received from the terminal 50-c via the wireless unit 19, the processor 21 sends out the terminal 50-c based on a predetermined call setting procedure and indicates a dialed number indicating the destination To get.
When the processor 21 analyzes the dial number and identifies that the destination is a subscriber accommodated in the public telephone network 33, the processor 21 switches the DTMF signal generator as in the case where the source is the telephone 40. 14, the subscriber line 31 is accessed via the detector 13 and the splitter 11.
If it is determined that the corresponding outgoing call is a completed call or an incomplete call, the processor 21 connects the first contact of the switches 12-t, 12-r to the corresponding third contact. Thus, the subscriber interface unit 17 is connected to the subscriber line 31 via the splitter 11, and the communication between the subscriber line 31 and the radio unit 19 is transferred between the subscriber line 31 and the radio unit 19 for the call signal. This is done via the processor 21.
In addition, the detection of the line signal delivered from the subscriber line 31 among the line signals indicating the disappearance (end call) of the completed call or the incomplete call is performed via the detector 13 and the opposite. In addition, the line signal delivered from the terminal 50-c is detected via the wireless unit 19 and delivered to the subscriber line 31 via the contact of the switch 16.
(Call setting for calls that occur in terminal 50-c and the other party is accommodated in the Internet telephone network)
The processor 21 performs call setting of the corresponding call by transmitting / receiving a predetermined packet to / from the Internet 34 via the signal processing unit 18 and the splitter 11 via the high band of the transmission band of the subscriber line 31.
In such a call setting process, the processor 21 appropriately associates with the terminal 50-c via the wireless unit 19, and for the sequence of packets indicating the call signal of the completed call, the signal processing unit 18 and the wireless unit 19 is linked to the terminal 50-c and the above-described high band.
(Call setting for a call that occurs in the telephone 40 and the other party is accommodated in the Internet telephone network)
The processor 21 performs call setting of the corresponding call by transmitting / receiving a predetermined packet to / from the Internet 34 via the signal processing unit 18 and the splitter 11 via the high band of the transmission band of the subscriber line 31.
In such a call setting process, when the processor 21 identifies that the corresponding call has occurred in the telephone 40, the second contact becomes the third contact for both the switches 12-t and 12-r. Connection is made and the subscriber line 31 is replaced by the subscriber interface unit 17.
Further, the processor 21 is appropriately linked with the telephone 40 via the subscriber line interface unit 17 described above, and is generated by converting a call signal for a completed call (a packet sequence conforming to VoIP, or such The analog signal to be converted into a sequence of packets is linked with the subscriber line interface unit 17 and the signal processing unit 18 so as to be transferred between the telephone 40 and the above-described high frequency band.

A feature of the present embodiment is a call setting procedure for an incoming call that is received via the subscriber line 31 and the caller number is notified via the low band of the transmission band of the subscriber line 31.
The operation of each unit in the process of setting up an incoming call will be described below.
In a specific storage area of the main memory of the processor 21, as shown in FIG. 4, a ringing terminal table 21T composed of the following fields is arranged.
"Caller number" field in which caller numbers ("090000000001" to "090000000003",...) That individually indicate callers who can be parties to the terminals 50-1 to 50-n are stored. “Binary information indicating whether application to a response to a call received from a caller indicated by a corresponding caller number is permitted for each terminal 50-1 to 50-n (here, a logical value“ “1” means allowed, and logical “0” means not allowed.) “Binary information” field in which a column of “is stored” is received via the subscriber line 31 The call is received via the subscriber line 31 within a specified time following the reversal of the polarity of the voltage applied to the subscriber line 31 (FIG. 2 (1)) and the reversal of the polarity. Audio reception signal “information receiving terminal activation signal As "(FIG. 2 (2)), it is notified from the local switching station 32.

  When the processor 21 detects the inversion of these polarities and the “information receiving terminal activation signal” via the detector 13, the processor 21 closes the switch 16, and the subscriber line 31 is connected via the switch 16 and the splitter 11. It is notified to the subscriber line switching center 32 as a state terminated in a DC manner (hereinafter, information transmitted to the subscriber exchange 32 by such termination is referred to as “primary response signal”) (FIG. 2). (3), Fig. 3 (1)).

When the subscriber line switching center 32 identifies the “primary response signal”, it transmits a “caller number” indicating the caller of the corresponding incoming call to the subscriber line 31 (FIG. 2 (4)). As for such “sender number”, ITU-T recommendation V. Assume that the audio signal is transmitted as an audio frequency signal conforming to the standard No. 23.
In the ADSL modem 10, this "caller number" is transmitted to the detector 13 via the splitter 11, received by the detector 13, and delivered to the processor 21 (FIG. 2 (5)).

  When the processor 21 obtains the “caller number”, the switch 16 is set to open, and the DC termination of the subscriber line 31 is released via the switch 16 and the splitter 11 (hereinafter referred to as such). The information transmitted to the subscriber exchange 32 when the terminal is terminated is referred to as a “reception completion signal”), and the fact is notified to the subscriber line switching center 32 (FIGS. 2 (6) and 3 (2)). .

When the subscriber line switching center 32 identifies the “reception completion signal”, it sends a “calling signal” indicating a request for calling the destination of the corresponding incoming call to the subscriber line 31 (FIG. 2 (7)). ) And ringback tone transmission to the caller of this incoming call is started (FIG. 2 (8)).
In the ADSL modem 10, this “calling signal” is detected by the detector 13 and notified to the processor 21 (FIG. 2 (9)). When the processor 21 identifies such a “call signal”, it performs the following series of processes.
(1) Among the records in the ringing terminal table 21T, the record corresponding to the “sender number” acquired in advance (hereinafter referred to as “specific record”) is specified (FIG. 3 (3)).
(2) Of the terminals 50-1 to 50-n, all of the terminals (hereinafter referred to as “ring target terminals”) whose logical value of the binary information included in the “specific record” is “1”. Specify (Fig. 3 (4)).
(3) A request for generating a ringing tone (hereinafter referred to as “ringing request”) is sent to all of these “ringing target terminals” via the wireless unit 19 together with the above “caller number”. (Fig. 2 (10), Fig. 3 (5))). Note that such “sender number” and “ring request” are standards applied to the formation of a wireless transmission path between the wireless unit 19 and the terminals 50-1 to 50-n as described above. Assume that the packet is delivered via a spare field of a packet that is secured without loss of conformance with IEEE 802.11b.

On the other hand, these ringing target terminals notify the user that an incoming call has occurred by displaying these delivered caller numbers and outputting a ringing tone in parallel.
Among the ringing target terminals, the ringing target terminal (hereinafter referred to as “specific ringing target terminal”) 50-c to which the user has responded first sends an “incoming response signal” indicating that to the ADSL modem 10. It is transmitted to the address (FIG. 2 (11)).

When the processor 21 receives this “incoming response signal” via the wireless unit 19, it performs the following processing.
A “ringing stop request” is transmitted to all “ringing target terminals” other than “specific ringing target terminal” (FIGS. 2 (12) and 3 (6)).
When the switch 16 is closed, the subscriber line 31 is DC-terminated via the switch 16 and the splitter 11 (hereinafter, information transmitted to the subscriber exchange 32 by such termination is transmitted). "Secondary response signal") is notified to the subscriber line switching center 32 (FIG. 2 (13), FIG. 3 (7)).

When the subscriber line switching center 32 identifies this “secondary response signal”, it cancels the transmission of the ringback tone described above and cancels the reversal of the polarity of the voltage applied to the subscriber line 31. The ADSL modem 10 is notified of this (FIG. 2 (14)), and a speech path is formed between the subscriber line 31 and the caller (FIG. 2 (15)).
In the ADSL modem 10, when the processor 21 identifies the release of such polarity inversion via the detector 13 (FIG. 2 (16)), the processor 21 performs the following processing.
Instructs the specific ringing target terminal to shift to the call state via the wireless unit 19 (FIG. 3 (8)).
The subscriber line interface unit 17 is connected to the subscriber line 31 via the switches 12-t and 12-r and the splitter 11 (FIG. 3 (9)).
By communicating with the subscriber line interface unit 17 and the radio unit 19, both call signals are transmitted between the specific ringing target terminal and the subscriber line 31 (FIG. 2 (17)).

That is, for any call received via the subscriber line 31, only a desired terminal that is allowed to be used for a response to the caller or for a call with the caller rings. The user number is displayed only through these terminals.
Therefore, according to the present embodiment, not only the arrangement of the terminals 50-1 to 50-n but also the configuration and arrangement of the organizations and departments to which these terminals 50-1 to 50-n belong are flexibly adapted. The telephone operation according to the form is realized, and the function of the caller ID notification is effectively utilized.

Furthermore, a desired terminal is excluded from the target of ringing according to an incoming call whose caller is indicated by a specific caller number, according to the contents of the ringing terminal table 21T.
Therefore, according to the present embodiment, useless response to incoming calls, transfer of transfer, etc. are avoided, and the environment related to the performance of work and business is properly maintained, and the convenience of telephone and caller ID notification Is increased.

In the present embodiment, the present invention is applied to the ADSL modem 10.
However, the present invention is equally applicable to digital subscriber line modems that interface with various digital subscriber lines other than ADSL, as described below.
・ VDSL (Very High-Bit-Rate Digital Subscriber Line)
・ HDSL (High-Bit-Rate Digital Subscriber Line)
・ SDSL (Symmetric Digital Subscriber Line)
・ IDSL (ISDN Digital Subscriber Line)
・ CDSL (Consumer Digital Subscriber Line)
・ CiDSL (Consumer-installable Digital Subscriber Line)
・ MDSL (Multi (Medium) -Rate Digital Subscriber Line),
In the present embodiment, the ADSL modem 10 is configured as a separate device from the telephone 40.

However, the present invention is incorporated in a telephone that can access either or either of the public telephone network and the IP telephone network, or a desired number of telephones and subscriber lines (including digital subscriber lines). The present invention can be similarly applied to a network terminating device that interfaces with.
Further, the present invention is not limited to a digital subscriber line modem. For example, the present invention is similarly applied to a cable modem connected to a subscriber line 31 and connected to a cable television transmission line and used for access to the Internet or the like. It is applicable to.

Further, in the present embodiment, the aforementioned binary information column is registered in advance in each record constituting the ringing terminal table 21T.
However, such a ringing terminal table 21T may be configured, for example, by registering identification calls of corresponding individual terminals instead of the binary information described above.
Further, for the ringing terminal table 21T, for example, when one of the number n of the terminals 50-1 to 50-n and the total number of unique callers whose caller number is displayed is significantly smaller than the other. One of them corresponds to a search key, and the other identifier or a column of such identifiers is registered in advance to reduce the size, and such a ringing terminal table 21T The amount of processing to be referred to may be reduced.

The present invention is not limited to the ADSL modem 10 and the cable modem described above, and can be similarly applied to, for example, a private branch exchange that accommodates the terminals 50-1 to 50-n as extensions.
Furthermore, in the present embodiment, both the above-described “caller number” and “ring request” are delivered to the terminal 50-c via the spare field of a single packet.
However, these “caller number” and “ring request” may be delivered to the terminal 50-c via the spare field of different packets.

In the present embodiment, a response to a call received via the subscriber line 31 is made through only one of the terminals 50-1 to 50-n.
However, the present invention is not limited to such a configuration. For example, binary information corresponding to the telephone 40 is registered in the ringing terminal table 21T, and the subscriber line interface unit 17 is replaced with the radio unit 19 in the processor 21. By operating under the control, processing for realizing the following items may be performed.
-Ringing of the telephone 40 and cancellation of the ringing-Caller number display via the telephone 40-Response to a call received via the subscriber line 31 Furthermore, in this embodiment, access to the Internet 34 via ADSL (IP The present invention is applied to an ADSL modem 10 that realizes (access to a telephone network).

However, the present invention is also applicable to a network terminating device that enables access to a “storage and switching network or message switching network to which various transmission media, transmission methods and communication procedures are applied” instead of the Internet 34. It is applicable to.
Further, the present invention is not limited to the above-described embodiments, and various embodiments are possible within the scope of the present invention, and any improvement may be applied to all or part of the constituent devices.

It is a figure which shows one Embodiment of this invention. It is a figure explaining operation | movement of this embodiment. It is an operation | movement flowchart of this embodiment. It is a figure which shows the structure of a ringing terminal table.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ADSL modem 11 Splitter 12, 16 Switch 13 Detector 14 DTMF signal generator 15 Resistor 17 Subscriber line interface part (SLIC)
18 Signal processing unit 19 Wireless unit 20 LAN interface unit 21 Processor (CPU)
21T Ringing terminal table 31 Subscriber line 32 Subscriber line switching station 33 Public telephone network 34 Internet 40 Telephone 50 Terminal 60 Personal computer (PC)

Claims (5)

For each call that occurs in a plurality of terminals that can access the storage switching network or message switching network and the circuit switching network, either the storage switching network or the message switching network, and the circuit switching network, and In a network termination device that is provided for individual accommodation of a plurality of terminals and that interfaces with a link that does not conform to the signal system of the circuit switching network,
For each caller number of an incoming call that occurs in the plurality of terminals, a storage means in which all of the terminals that are allowed to be applied to an incoming call response are registered in advance.
Caller number acquisition means for acquiring a caller number notified from the circuit switching network based on the signaling method;
Control means for restricting the target of ringing and notifying the acquired caller number to all terminals registered in the storage unit corresponding to the acquired caller number A network termination device. The network termination device according to claim 1, wherein
Access to the storage switching network or the message switching network is as follows:
The network termination device is performed via a link different from a subscriber line accommodated in the circuit switching network. For each call that occurs in a plurality of terminals that can access an IP network and a circuit switching network, the IP network, the circuit switching network, and the individual terminals are individually accommodated. And in a network termination device that interfaces with a link that does not conform to the signal system of the circuit switching network,
For each caller number of an incoming call that occurs in the plurality of terminals, a storage means in which all of the terminals that are allowed to be applied to an incoming call response are registered in advance.
Caller number acquisition means for acquiring a caller number notified from the circuit switching network based on the signaling method;
Control means for restricting the target of ringing and notifying the acquired caller number to all terminals registered in the storage unit corresponding to the acquired caller number A network termination device. The network termination device according to claim 3, wherein
Access to the IP network is as follows:
The network termination device is performed through a digital subscriber line formed by sharing a subscriber line accommodated in the circuit switching network. In the network termination device according to any one of claims 1 to 4,
In the storage means,
For each caller number of an incoming call that occurs in the plurality of terminals, all terminals that are allowed to apply to the incoming response as binary information individually indicating rejection of the application to the incoming response of the plurality of terminals Network terminator characterized by being registered.

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